Go back a decade and imagine your responseto the question: “What would a threat to truth look like?” You might have thought of censorship—perhaps the Fahrenheit 451 version, in which books are piled up and burned, or the 1984 nightmare of a regime with total information control. Or perhaps you would have worried about the limits and biases of the mainstream media.

But in the digital age, when speech can exist mostly unfettered, the big threat to truth looks very different. It’s not just censorship, but an avalanche of undistinguished speech—some true, some false, some fake, some important, some trivial, much of it out-of-context, all burying us.

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For the longest time, we thought that as speech became more democratized, democracy itself would flourish. As more and more people could broadcast their words and opinions, there would be an ever-fiercer battle of ideas—with truth emerging as the winner, stronger from the fight. But in 2018, it is increasingly clear that more speech can in fact threaten democracy. The glut of information we now face, made possible by digital tools and social media platforms, can bury what is true, greatly elevate and amplify misinformation and distract from what is important.

Deluged by apparent facts, arguments and counterarguments, our brains resort to the most obvious filter, the easiest cognitive shortcut for a social animal: We look to our peers, see what they believe and cheer along. As a result, open and participatory speech has turned into its opposite. Important voices are silenced by mobs of trolls using open platforms to hurl abuse and threats. Bogus news shared from one friend or follower to the next becomes received wisdom. Crucial pieces of information drown in so much irrelevance that they are lost. If books were burned in the street, we would be alarmed. Now, we are simply exhausted.

It’s not speech per se that allows democracies to function, but the ability to agree—eventually, at least some of the time—on what is true, what is important and what serves the public good. This doesn’t mean everyone must agree on every fact, or that our priorities are necessarily uniform. But democracy can’t operate completely unmoored from a common ground, and certainly not in a sea of distractions.

How can we get back to that common ground? We need new mechanisms—suited to the digital age—that allow for a shared understanding of facts and that focus our collective attention on the most important problems. That might sound nebulous or difficult or even impossible in the current chaos. But consider that the modern state or today’s public health systems also seemed difficult or impossible at many points in human history. In a time of information avalanche, focusing on what is true and important can be a revolutionary act.